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We present binding properties of biomolecules and their dependence on ionic strength and temperature using a microfluidic aptameric graphene field-effect transistor (FET) nanosensor. Aptamer-immobilized graphene is used to recognize target molecules, and the resulting changes in graphene conductance is measured to study the binding kinetics of biomolecules. Binding properties of aptamer-protein interactions...
We present a new approach for real-time, specific and sensitive detection of insulin using a graphene aptameric nanosensor. The nanosensor is configured as a graphene field effect transistor, where the graphene conducting channel was functionalized with a guanine-rich aptamer IGA3 that would form an anti-parallel G-quadruplex upon insulin binding. The aptamer conformational changes altered the electrical...
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